Swiftのアプリ開発でハマったこと

XCode6 Beta でSwiftで開発したときにあったトラブルを紹介します

Transcript

1. Swift LT @Wantedly 2014-07-17 yohei sugigami
2. ਿ্
   ༸ฏ
   εΪΨϛ
   Ϥ΢ϔΠ
   (JU)VC
   !TVTJFZZ
   ઌ݄+0*/ͨ͠͹͔Γͷ৽ถϓϩάϥϚʔ
   ! ! ! 8BOUFEMZͰ͸ߴ͍2JJUBྗ͕ٻΊΒΕΔ
    SwiftͰ̎Ґ
3. ɾSwiftͷΞϓϦ։ൃͰϋϚͬͨ ɹ͜ͱ ̍̌ݸ ! ɾXcode6ͱSwiftͷΞϓϦ։ൃͰ ɹ౿Μͩ஍ཕͨͪ̔ݸ ΞδΣϯμ
4. Xcode6Ͱ৽نͷΞϓϦΛ։ൃͨ࣌͠ʹؾ͍ͮͨ͜ͱ Λ·ͱΊ·͢ɻΞϓϦͷ࢓༷͸ҎԼͷͱ͓Γɻ ! - ։ൃݴޠ͸Swift - CocoapodsͰطଘObjcͷϥΠϒϥϦΛར༻ - σϓϩΠλʔήοτ͸iOS8Ҏ্ - StoryboardΛར༻ - AutolayoutͱSizeClassesΛར༻
5. ։ൃ؀ڥ͸ҎԼͷͱ͓Γɻ ! - Xcode6͸Beta2, 3Λར༻ - ݕূ࣮ػ͸iOS8 Beta2, 3ΛΠϯετʔϧͷiPhone5 ! Beta2Ͱ։ൃ͍ͯͨ͠ΒɺBeta3͕ग़·ͨ͠ ʘ(^o^)ʗ
6. SwiftͷΞϓϦ։ൃͰ ϋϚͬͨ͜ͱ
7. ҎԼͷ༷ͳObjCϝιουʹSwiftͷ ΫϩʔδϟΛ౉͢ํ๏ @interface HogeFuga : NSObject + (void) hogeUsingBlock:(id)bock; @end
8. ObjC id = Swift AnyObject
9. HogeFuga.hogeUsingBlock( { () -> () in println("Fuga") }) ERROR Type '() -> ()' does not conform to protocol 'AnyObject'
10. var closures: AnyObject = { () in println("Fuga") } ERROR Type '() -> ()' does not conform to protocol 'AnyObject'
11. typedef void (^Block)(); ! @interface HogeFuga (Wrapper) + (void) hogeUsingBlockWrapper:(Block)block; @end ! @implementation HogeFuga (Wrapper) + (void) hogeUsingBlockWrapper:(Block)block; { [HogeFuga hogeUsingBlock:block]; } @end ObjCͰܕΛ໌ࣔͨ͠ϒϩοΫΛ ࣋ͭϝιουͰϥοϓ͢Δ
12. NSObject#descriptionΛΦʔόʔϥ Πυ͢Δ ᶄ
13. class Hoge: NSObject { var name: String? var note: String? override func description() -> String { return "Name = \(self.name), Note = \(self.note)" } } ERROR Method does not override any method from its superclass
14. class Hoge: NSObject { var name: String? var note: String? override var description: String! { get { return "Name = \(self.name), Note = \(self.note)" } } } ϓϩύςΟͷΦʔόʔϥΠυ͢Δ
15. ObjCͷenum஋ΛSwiftه๏Ͱهࡌ ͢Δํ๏͕Θ͔Βͳ͍ ᶅ
16. Swift UIViewAutoresizing.FlexibleLeftMargin typedef NS_OPTIONS(NSUInteger, UIViewAutoresizing) { UIViewAutoresizingNone = 0, UIViewAutoresizingFlexibleLeftMargin = 1 << 0, … } ObjC UIViewAutoresizingFlexibleLeftMargin Θ͔Γ΍͍͢ྫ
17. Swift UIViewAnimationOptions.LayoutSubviews typedef NS_OPTIONS(NSUInteger, UIViewAnimationOptions) { UIViewAnimationOptionLayoutSubviews = 1 << 0, UIViewAnimationOptionAllowUserInteraction = 1 << 1, … } ObjC UIViewAnimationOptionLayoutSubviews ڐ༰ൣғͳྫ
18. Swift HogeStyle.FugaValue1 typedef NS_ENUM(NSInteger, HogeStyle) { HogeFugaDefault, HogeFugaValue1, HogeFugaValue2, HogeFugaSubtitle }; ObjC HogeFugaValue1 ෳࡶͳྫʢPrefix͕Ұக͍ͯ͠ͳ͍ʣ
19. enumܕͷϝιουҾ਺΍ม਺ʹ enumͰఆٛ͞Εͨఆ਺Ҏ֎Λઃఆ ͢ΔͱΤϥʔʹͳΔ ᶆ
20. typedef NS_ENUM(NSInteger, UIViewContentMode) { UIViewContentModeScaleToFill, ... } ! self.view.contentMode = 0 ! // => ERROR Cannot convert the expression's type '()' to type 'UIViewContentMode' Swiftͷܕ͸ݫ͍͠Ͱ͢Ͷ
21. εΧϥʔܕͷΩϟετ͸ίϯόʔ δϣϯΛ࢖͏ ᶇ
22. let i: Int = Int(1.0) let n: NSInteger = NSInteger(1.0) ! let f: Float = Float(100) let d: Double = Double(100) let g: CGFloat = CGFloat(100) SwiftͰ͸εΧϥʔܕͷΩϟετ͸ͳ͍ ୅ΘΓʹίϯόʔδϣϯΛར༻
23. let index: NSInteger = 1 let width: CGFloat = 100 let r = width * (CGFloat)index ! // => ERROR Consecutive statements on a line must be separated by ';' ObjCϥΠΫͳΩϟετ͸Ͱ͖ͳ͍
24. let someObjects: [AnyObject] = [ Movie(name: "2001: A Space", director: "Stan"), Movie(name: "Moon", director: "Duncan Jones"), Movie(name: "Alien", director: "Ridley Scott") ] ! for object in someObjects { let movie = object as Movie // Type Casting ! println("Movie: '\(movie.name)', dir. \(movie.director)") } ิ଍
 ΦϒδΣΫτܕ͸ΩϟετՄೳ
25. for movie in someObjects as [Movie] { println("Movie: '\(movie.name)', dir. \(movie.director)") } ഑ྻΛΩϟετ͢ΔͱίϯύΫτʹॻ͚Δ
26. CGFloatͱFloat·ͨ͸Doubleͷԋࢉ ᶈ
27. import CoreGraphics ! typealias CGFloat = Float CoreGraphicsʹ͸CGFloat͸FloatͱΤΠϦΞ ε͞Ε͍ͯΔ
28. let index: NSInteger = 1 let width: CGFloat = 100 let r1 = width * Float(index) ! // => ERROR Could not find an overload for '*' that accepts the supplied arguments CGFloatͱFloatͷԋࢉ Ұݟਖ਼͘͠ಈ࡞ͦ͠͏͕ͩΤϥʔʹͳΔ
29. ͳͥͳΒ iPhone5s(arm64)ΛλʔήοτʹϏ ϧυ͍ͯ͠Δ͔Β
30. ͜ͷͱ͖CGFloat͸SwiftͷDouble ʹΤΠϦΞε͞ΕΔ
31. let index: NSInteger = 1 let width: CGFloat = 100 let r2 = width * Double(index) // => OK iPhone5s(arm64)ͷ৔߹͸Doubleͩͱίϯ ύΠϧͰ͖Δ
32. let index: NSInteger = 1 let width: CGFloat = 100 let r = width * CGFloat(index) // => OK CGFloatͱͷԋࢉ͸CGFloatʹίϯόʔ δϣϯ͠·͠ΐ͏
33. ObjCͷNSIntegerͱSwiftͷIntͷԋ ࢉ ᶉ
34. typealias NSInteger = Int ! ! let i: Int = 1 let n: NSInteger = 1 let x: CGFloat = 3 let y: Float = 3 let w = i + Int(x) + Int(y) // => OK let q = n + Int(x) + Int(y) // => OK ! if n == i { println("HERE!") // => OK }
35. let u: NSUInteger = 1 ! // ERROR => Use of undeclared type 'NSUInteger'; did you mean to use 'Int'? NSUInteger ͸ར༻Ͱ͖·ͤΜ
36. ΫϩʔδϟܕϓϩύςΟͷΦϓ γϣφϧͳॻ͖ํ ᶊ
37. class Fuga { var completion: ( () -> () )? } ؙׅހͰׅΓ·͢
38. ObjCͷClassܕΛύϥϝʔλʹͱΔ ϝιουʹSwiftͷClassΛ౉͢ํ๏ ᶋ
39. @interface RKObjectMapping : RKMapping { +(instancetype)mappingForClass:(Class)objectClass } ! ! @implementation RKObjectMappingOp… { return [mapping.objectClass new]; } ౉ͨ͠Classܕ͕ObjCଆͰnew͞ΕΔέʔε ʢྫɿ Restkit)
40. Swift͔ΒͲ͏͍͏ clazz Λ౉ͤ͹͍͍ͷ͔ class HogeModel: NSObject { } ! ! var clazz = ???
 let mapping: RKObjectMapping = RKObjectMapping(forClass: clazz)
41. var clazz: AnyClass = NSClassFromString(“WTDHogeModel”) ! // ERROR => EXC_BAD_INSTRUNCTION ࣦഊᶃ NSClassFromStringͰ౉͢
42. var clazz: AnyClass = object_getClass(WTDHogeModel()) ! ! // newͰERROR [mapping.objectClass new]; ࣦഊᶄ object_getClassͰ౉͢
43. var clazz: NSObject.Type = WTDHogeModel.self
 let mapping: RKObjectMapping = RKObjectMapping(forClass: clazz) ! ! // ʹʼ OK ݁࿦ NSObject.TypeΛ౉͢
44. γϯάϧτϯύλʔϯΛ࣮૷͢Δ ̏ͭͷํ๏ ᶌ
45. ! ! ஗ԆॳظԽʢlazy initializationʣͱεϨου ηʔϑʢthread safetyʣ͕ߟྀ͞Ε࣮ͨ૷
46. class Singleton { class var sharedInstance : Singleton { struct Static { static var onceToken : dispatch_once_t = 0 static var instance : Singleton? = nil } dispatch_once(&Static.onceToken) { Static.instance = Singleton() } return Static.instance! } } dispatch_onceͰఆٛ ObjCͱಉ༷ͷ࣮૷ํ๏
 ຖճ͜ΕΛॻ͘ʹͷ͸େม
47. let _SingletonSharedInstance = Singleton() ! class Singleton { class var sharedInstance : Singleton { return _SingletonSharedInstance } } άϩʔόϧఆ਺Ͱఆٛ ࠓޙSwiftͷݴޠ࢓༷͕มߋ͞Εہॴతά ϩʔόϧม਺͕ఆٛͰ͖ΔΑ͏ʹͳΕ͹ɺ ͜ͷ࣮૷ํ๏͕΋ͬͱ΋γϯϓϧ
48. class Singleton { class var sharedInstance : Singleton { struct Static { static let instance : Singleton = Singleton() } return Static.instance } } structͷstaticఆ਺Ͱఆٛ ʢਪ঑ʣ Swiftͷclass͸staticఆ਺Λར༻Ͱ͖ͳ͍ͷ ͰɺstructͰωετͯ͠staticఆ਺Λอ࣋
49. Xcode6ͱSwift&iOS8 ͷΞϓϦ։ൃͰ౿Μ ͩ஍ཕͨͪ
50. ίϯύΠϧΤϥʔ XXXHeaderϑΝΠϧ has been modified since the precompiled header ᶃ
51. fatal error: file ‘…/UIKit.framework/ Headers /UIVisualEffectView.h’ has been modified since the precompiled header …
52. ରԠํ๏ ຖճͳ͔ͥͳ͓ΔରԠํ๏͕·ͪ·ͪ ! - Xcode6࠶ىಈ - ϏϧυΛΫϦʔϯ͢Δ - DerivedDataΛ࡟আ͢Δ - OSXΛ࠶ىಈ͢Δ - Xcode6ΛೖΕͳ͓͢ orz
53. ᶄ IBOutletͷStoryboardͱͷίωΫ γϣϯ͋Γ͕දࣔ͞Εͳ͍৔߹͕ ͋Δ
54. ίϯύΠϧޙͷΞϓϦͷڍಈ͸ਖ਼͘͠઀ଓ ͞Ε͍ͯΔঢ়ଶͰಈ࡞͍ͯ͠·ͨ͠
55. ᶅ StoryboardͷϑΝΠϧΛ։͍ͯ΋ XMLͰදࣔ͞ΕΔ
56. XML…
57. ໌ࣔతʹ։͖·͠ΐ͏
58. ᶆ ιʔείʔυϋΠϥΠτͱೖྗิ ׬͕ޮ͔ͳ͘ͳΔ
59. ͨ·ʹ෮׆΋͠·͆͢
60. ᶇ γϛϡϨʔλʔͰΞϓϦΛىಈ͠ Α͏ͱ͢ΔͱΤϥʔʹͳΔ
61. Xcode6ͱγϛϡϨʔλʔΛ࠶ىಈ ͨ͠Βͳ͓Γ·ͨ͠ɻ
62. ᶈ Xcode5ͱXcode6ͷγϛϡϨʔλʔ Ͱಉ࣌ʹΞϓϦΛىಈͰ͖ͳ͍
63. ͲͪΒ͔ͷγϛϡϨʔλʔΛऴྃ ͠·͠ΐ͏
64. ᶉ switchͱॻ͘ͱXcode͕ϑϦʔζ͢ Δ
65. Beta3Ͱ͸·ͩग़͍ͯͳ͍Ͱ͢
66. ᶊ ޡͬͯϓϩδΣΫτΛXcode5Ͱ։ ͍ͯStroyboardΛ։͘ͱXcode6Ͱ Stroyboard͕͓͔͘͠ͳ͍ͬͯΔ
67. Xcode5Ͱޡͬͯ։͍ͨΒԿ΍ΒΤϥʔ͕ ϑΝΠϧ͕ഁյ͞Ε·ͨ͠ɻ git reset ͳͲͰϑΝΠϧΛ໭͠·͠ΐ͏ɻ
68. Finder͔ΒϓϩδΣΫτϑΝΠϧΛ μϒϧΫϦοΫͯ͠։͘ͱXcode5 Ͱ։͔ΕΔ͜ͱ΋͋Γ·͢ɻ
69. Xcode5Λىಈ͢ΔͱɺXcode6Ͱ࡞ ۀ͍ͯͨ͠ϓϩδΣΫτΛউखʹ ։͘৔߹͕͋Γ·͢ɻ
70. ༧๷ࡦ ! ̍. gitͳͲͰࡉ͔͘ίϛοτͯ͠ϩʔϧόοΫͰ͖Δ Α͏ʹ ! ̎. Xcode6ͰϓϩδΣΫτΛ։͍ͨΒετʔϦϘʔυ Λ࠷ऴฤूը໘ʹͯ͠ด͡ͳ͍ ! ̏. Xcode6Λऴྃ͢Δͱ͖͸ϓϩδΣΫτΛด͔ͯ͡ Βऴྃ͢Δ ! ̐. Xcode5ΛࣺͯΔ͆
71. iOS,Android Rails ΤϯδχΞ ืूத hiring@wantedly.com ڵຯ͕͋Δํ͸ͪ͜Β͔Β͝࿈བྷ͍ͩ͘͞ ৽͍ٕ͠ज़ʹͲΜͲΜ௅ઓ͍ͨ͠ ϞόΠϧΤϯδχΞɾ΢Υϯςουʂʂ ͪ͜Β͔ΒͰ΋OKͰ͢
72. ͓ΘΓ